There is a world of difference, between, the Eternal, Unchangeable, Word of God, we find Stated in Koran ... and human effected Religions and other holy Scriptures and Orders ...
Religion, primarily is the variously Applied, understanding, of The True Word ... arrived at with Logics, and such tools as may be at the disposal of the Exegetists doing Scholastic exercises, such as, the fallible human's Contemplation and Mysticism.
Presently its Technologies and Sciences.
Religion, therefore, is intrinsically, the name of scholastic Opposing of the other's interpretation of The Word of God ... and such, invariably leads to warring.
Thus, in reality, "there can be no true Religious tolerance" ... although a Feigned version of Tolerance, may be adopted by some as an Act of personal condescension.